Hollow constructional block



Nov. 30, 1954 P. N. PAQUET 2,695,512

HoLLow coNsTRucTloNAL BLOCK Filed March 19, 1948 United States Patenttilice 2,695,512 Patented Nov. 3o, 1954 2,695,512 .HOLLOW dCONSTR'TUC-r1ONAL BLOCK Pierre Norbert Paquet, Uccle, Belgium d Application March 19, 1951s, `serial No'.15,936 Claims priority, appii'iimi Belgium Ap'ri1'11,`19`47` 7 Cliia (Cl."7`2-41)V c Thepresentinventionrelates toa hollow structural ,block comprising` vertical longitudinal walls.wh1ch are connected togetherbymeans of vertical transversewalls.

; In thepresent speciticatiomit` `is necessary touunderstand by verticallongitudinal walls or..\"1ongitudinal walls the` wallswhichi are parallel to theifront. faces ofaLwall constructedbymeans of blocks in accordance with the invention,- and it is necessary to understand by vertical transverse ,walls or transverse Walls, the vertical walls which are perpendicular tolthe longitudinal walls. The two .other walls of the hollow block according to the inventionare, called fhorizontallwalls Up tothe present, when a structureis being .imadeby 4means of hollow blocks ofaknown type,.theseu are built upfwith mortor in a mannensimilar to that used for bricksormasonry.l

I The purpose ofthe present iinveintioniis' `to make posi terminating in a hole formed over the entire height of the block at a distance from :the middle plane of a `neighbouring transverse wall which is equal i to the half of the distance beween the middle planes of two adjacent transverse walls of the block.

According to an advantageous `form of construction in the case of a block of parallelepiped form provided with a transverse wall at mid-length and with a trans- .verse wall at each end, a cavity is formed in the medial i transverse wall,` whilst grooves or` slots are formed in the end transverse walls, so as to form a cavity bythe `juxtaposition of the extremities of two blocks, and in addition, the above-mentioned channels terminate in holes of the kind mentioned which" are formed in one `only of the longitudinal walls at a distance from each end equal to a quarter of the length of the block.

Intorder to construct awall by means of blocks of this kind, a commencement is made by `superposing a certain number of layers of blocks, which for` preference have been previously damped. `This superposition is carried out without mortar, and in such a way that the holes mentioned'above register with one another. A workman then introduces a bar into the superposed holes, the dimensions of thislbar being such thatit recties the -`alignment of the holes if the latter do not register quite correctly. This bar is of such a form that there remains, between it and the sides of the holesin which it s engaged, a space which permits the escape of. air when mortar is poured in, as will be indicated hereinafter. `The bar is moreover of the mortar to ow past the holes in whichthe bar is engaged. An assistant thenpours mortar in very liquid condition into lthe cavities situated at one side of the holes into which the above mentioned bar passes. When the casting reaches the upper level of the wall under construction,` all the blocks are automatically lconnected together in rigid manner at the side of the'bar where the casting has taken place, owing to the 4fact that the said channels are filled upwith mortar. After each casting loperation, the operator. withdraws the bar from .the'l holes V such a form that it does not allow 4into `which it has been 4engaged and introduces it into the succeeding holes. Consequently the holes whlch are ,freed from the bar are lled up `in V4turn when `mortar in over the whole length of the wall, a numberV of layers `of blocks is `againplaced without mortar in the same way as 'has been already mentioned. l

The longitudinaland transverse walls serve'las shuttering `for reinforced, concrete` columns serving as a Yframework for the Wall.v If itis desired to increase the `size of these columns of reinforced concrete, one of the longitudinal wallscan easily be replaced by` a mass of reinforced concrete integral` with that .of the adjacent column by demolishing with a chisel areas of less thickness inthe longitudinalwall opposite to that` in which the said holes are formed, in the neighbourhood of` the transverse walls.

,Other` features and details of the invention will appear n the course of the description ot the drawings `accompanying theapresdent speciiication, which show` d1- `agrammaticallyland by Way of example only some forms of realisationlof the invention. p i

p Figure .l `is a view inperspective, partly broken away, of aform of construction4 of a structural `block in ac- ,cordancewith the invention, the upturned face of which corresponds to the lowerface of the block in its position of` use. l

FigurelZ is a view inl perspective of a part of a` shuttering which is intended to be used in combinationwith lblocks such as that ofi-ligure 1,` and certain parts of which would Vbe removed. l l, p p f ,t

Figure 3 is across sectionthrough a barwhich acts Ain" conjunction for `the settinglof,Y the blocks `according to the invention. l l 1 c y Figures 4-land 5 each represent aplan view of a block according to theinvention seen at the lower face.

In these various gures, the samereference numerals designate the same, elements.` i 1 i `The structural block shown in Figure 1 is a block `of parallelepiped form, comprising vertical longitudinal walls 2 and 3, which are connected together by vertical transverse walls 4, 5 and 6.

The transverse wall 5 is disposed at mid-length of the block, and the walls 4 and 6 at `the ends of the block. A cavity 7 extending throughout the entire `height of the block is formed in the middle transverse Wall, whilst grooves or slots 8 and 9, possessing in cross section half the cross-sectional area ofthe cavity 7, `are Vformed in the end transverse walls 4 and 6, so as to form a cavity similar to the cavity 7 bythe juxtaposition of the extremities of two blocks. The cavity 7 and the slots 8 and 9 terminate or open into channels 10 formed in the lower `horizontal face. These channels extend from the transverse walls into `the longitudinal wall 2 as far as two holes 11 formed throughout the whole height of the block at a distance from each end` ofthe Vlatter equal jto a guarter of the `length of the block.

I-The longitudinal wall 3 opposite to the longitudinal wall 2 in which the holes: 11 are formed is of less thickness in the vicinity ofthe transverse walls 4, 5 and 6. This smaller thickness is produced on the one hand by the presence of passages 12 at a slight distance from the .outer face of the longitudinal wall 3, and on the other hand by the presence of grooves or slots 13 on the outside face of this same longitudinal wall.

The `partitions or tongues of material 14 between the passages 12 and the slots 13, and also the partitions or tongues 15 between the-passages 12 and the hollows 16 `formed between the longitudinal and transverse walls,

can easily be demolished by means of a chisel. lthe partitions 14 are removed, there is available through the union of the slots 13 with the passages 12, shafts in which lines suchu as electric 'wiring can be placed. f both the partitions 14 and` 15 situated between two adjacent transverse` walls are removed, there is`available, for the location of reinforced concrete to serve as a framework for-the4 structure, a cross-sectional area which If only said longitudinal and transverse walls, said transverse walls having cavities therein extending throughout their entire height, parts of the transverse walls being of less thickness at certain places near the horizontal faces, one of said longitudinal walls having a hole therein ex tending throughout the entire height of said block and positioned substantially midway betweenvtwo adjacent transverse Walls and one of said horizontal faces having zlh'mnels therein extending from said cavities to said References Cited in the le of this patent UNITED STATES PATENTS Name Number 6 Name Date Peters Sept. 21, 1915 Billner .lune 17, 1919 Goldie Apr. 19, 1921 Swan Mar. 4, 1930 FOREIGN PATENTS Country Date France a- July 6, 1920 (5th addition to No. 465,102) Australia Jan. 17, 1928 

